let path = require("path");
const webpack = require("webpack");
const ThemeColorReplacer = require("webpack-theme-color-replacer");
const { getThemeColors, modifyVars } = require("./src/utils/themeUtil");
const { resolveCss } = require("./src/utils/theme-color-replacer-extend");
const CompressionWebpackPlugin = require("compression-webpack-plugin");

const productionGzipExtensions = ["js", "css"];
const isProd = process.env.NODE_ENV === "production";

const assetsCDN = {
  // webpack build externals
  // externals: {
  //   vue: "Vue",
  //   "vue-router": "VueRouter",
  //   vuex: "Vuex",
  //   axios: "axios",
  //   nprogress: "NProgress",
  //   clipboard: "ClipboardJS",
  //   "@antv/data-set": "DataSet",
  //   "js-cookie": "Cookies",
  // },
  // css: [],
  // js: [
  //   "//cdn.jsdelivr.net/npm/vue@2.6.11/dist/vue.min.js",
  //   "//cdn.jsdelivr.net/npm/vue-router@3.3.4/dist/vue-router.min.js",
  //   "//cdn.jsdelivr.net/npm/vuex@3.4.0/dist/vuex.min.js",
  //   "//cdn.jsdelivr.net/npm/axios@0.19.2/dist/axios.min.js",
  //   "//cdn.jsdelivr.net/npm/nprogress@0.2.0/nprogress.min.js",
  //   "//cdn.jsdelivr.net/npm/clipboard@2.0.6/dist/clipboard.min.js",
  //   "//cdn.jsdelivr.net/npm/@antv/data-set@0.11.4/build/data-set.min.js",
  //   "//cdn.jsdelivr.net/npm/js-cookie@2.2.1/src/js.cookie.min.js",
  // ],
};

module.exports = {
  devServer: {
    // proxy: {
    //   '/api': { //此处要与 /services/api.js 中的 API_PROXY_PREFIX 值保持一致
    //     target: process.env.VUE_APP_API_BASE_URL,
    //     changeOrigin: true,
    //     pathRewrite: {
    //       '^/api': ''
    //     }
    //   }
    // }
    proxy: {
      "/api": {
        target: "http://114.218.158.78:14445",
        changeOrigin: true,
      },
    },
  },

  pluginOptions: {
    "style-resources-loader": {
      preProcessor: "less",
      patterns: [path.resolve(__dirname, "./src/theme/theme.less")],
    },
  },
  configureWebpack: (config) => {
    config.entry.app = ["babel-polyfill", "whatwg-fetch", "./src/main.js"];
    config.performance = {
      hints: false,
    };
    config.plugins.push(
      new ThemeColorReplacer({
        fileName: "css/theme-colors-[contenthash:8].css",
        matchColors: getThemeColors(),
        injectCss: true,
        resolveCss,
      })
    );
    // Ignore all locale files of moment.js
    config.plugins.push(new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/));
    // 生产环境下将资源压缩成gzip格式
    if (isProd) {
      // add `CompressionWebpack` plugin to webpack plugins
      config.plugins.push(
        new CompressionWebpackPlugin({
          algorithm: "gzip",
          test: new RegExp("\\.(" + productionGzipExtensions.join("|") + ")$"),
          threshold: 10240,
          minRatio: 0.8,
        })
      );
    }
    // if prod, add externals
    if (isProd) {
      config.externals = assetsCDN.externals;
    }
  },
  chainWebpack: (config) => {
    // 生产环境下关闭css压缩的 colormin 项，因为此项优化与主题色替换功能冲突
    if (isProd) {
      config.plugin("optimize-css").tap((args) => {
        args[0].cssnanoOptions.preset[1].colormin = false;
        return args;
      });
    }
    // 生产环境下使用CDN
    if (isProd) {
      config.plugin("html").tap((args) => {
        args[0].cdn = assetsCDN;
        return args;
      });
    }
  },
  css: {
    loaderOptions: {
      less: {
        lessOptions: {
          modifyVars: modifyVars(),
          javascriptEnabled: true,
        },
      },
    },
  },
  publicPath: process.env.VUE_APP_PUBLIC_PATH,
  outputDir: "dist",
  assetsDir: "static",
  productionSourceMap: false,
};
